Complete list of Terms and Definitions for Atomic Science
| Terms | Definitions |
|---|---|
| Th | Thorium |
| protons | positive charge |
| Sn | Tin metal |
| neutron | has no charge |
| like charges | repel each other |
| Electron | Negatively charged particle that exists in space surrounding an atom's nucleus |
| Periodic Table: families | metals, non-metals... etc. |
| proton | What did Ernest Rutherford discover about the nucleus? |
| Element | substance consisting entirely of one type of atom |
| Column | organized by the amount of electrons in their outermost level in the Periodic table. |
| Molecule | combination of atoms formed by a covalent bond |
| group | vertical column of elements in the periodic table |
| Gluon | the strong force that holds quarks together |
| Ionization | process of an atom gaining or losing electrons. |
| Atomic Theory of Matter | What did John Dalton write? |
| ion | a charged atom that forms when the numbers of electrons and protons are not equal |
| acidic properties | properties of a family of substances called acids a _ _ _ _ _ p _ _ _ _ _ _ _ _ _ |
| Borh Model | when the electron jumps from one sphere of energy to another the electron releases energy |
| elements | a component or constituent of a whole or one of the parts into which a whole may be resolved by analysis: |
| atom is 99% empty | What did Ernest Rutherford discover about the atom? |
| valance shell | the outer most electron shell of an atom |
| A group of 3 __________ make up a proton or a neutron. | Quirks. |
| mass number | the sum of the number of neutrons and protons in an atomic nucleus |
| Atomic number | The number of protons in an atom (same as the number of electrons in an atom unless atom is an ion) |
| Four forces at work in an atom | gravity, the electromagnetic force, the strong force, and the weak force. |
| How small is an atom? | An atom is about one one-millionth the thickness of a human hair. |